Introducció
This instruction manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Generac 6821 1.5-inch Clean Water Pump. Please read this manual thoroughly before assembly, operation, or maintenance to ensure proper use and to prevent injury or damage.
The Generac 6821 is a robust, gas-powered clean water pump designed for various water transfer applications, featuring a 79cc engine and a comprehensive accessory kit for immediate use.
Informació de seguretat
ADVERTIMENT: L'incompliment d'aquestes instruccions de seguretat podria provocar lesions greus o la mort.
- Always read and understand the entire manual before operating the pump.
- Operate the pump in a well-ventilated area to avoid carbon monoxide poisoning. Never operate indoors.
- Mantingueu els nens i les mascotes lluny de la zona d'operacions.
- Do not operate the pump with damaged hoses, connections, or if any parts are missing or broken.
- Utilitzeu l'equip de protecció individual (EPI) adequat, incloent-hi protecció ocular i guants.
- Ensure the pump is on a stable, level surface during operation.
- Do not refuel the engine while it is running or hot. Allow it to cool before adding fuel.
- Keep flammable materials away from the pump during operation.
Contingut del paquet
Verify that all items are present before beginning assembly or operation:
- Generac 6821 1.5-inch Clean Water Pump
- Mànega d'aspiració de 10 peus
- Mànega de descàrrega de 25 peus
- Colador
- Oli de motor
- Embut d’oli
- Handle Kit (and potentially wheel kit, depending on specific model variant)
- Manual del propietari (aquest document)
Configuració
1. Desembalatge i inspecció
Carefully remove all components from the packaging. Inspect for any shipping damage. If any parts are damaged or missing, do not operate the pump and contact customer support.
2. Instal·lació de la nansa
Attach the carrying handle to the pump frame using the provided hardware. Ensure it is securely fastened for safe transport.

Image: The Generac 6821 Clean Water Pump shown with its orange handle securely attached to the top of the engine frame, ready for transport.
3. Afegiu oli de motor
The engine is shipped without oil. Before starting, add the supplied engine oil using the oil funnel. Locate the oil fill cap/dipstick, remove it, and slowly pour oil until it reaches the upper mark on the dipstick. Do not overfill.
4. Afegir combustible
Fill the fuel tank with fresh, unleaded gasoline (minimum 87 octane). Do not use E85 fuel. Ensure the fuel cap is securely tightened after filling.

Imatge: Vista de dalt a baix view of the Generac 6821 pump, highlighting the orange fuel cap on the engine and the black pull-start handle.
5. Connecteu les mànegues
Connect the suction hose to the pump's inlet port (often color-coded, e.g., blue for inlet). Attach the strainer to the end of the suction hose. Connect the discharge hose to the pump's outlet port (often color-coded, e.g., green for outlet). Ensure all connections are tight to prevent air leaks, which can affect priming and pump performance.

Imatge: Un costat view of the Generac 6821 pump, clearly showing the green-colored discharge port where the outlet hose connects.

Imatge: Un front view of the Generac 6821 pump, highlighting the blue-colored suction port where the inlet hose connects.
6. Aclarint la bomba
The Generac 6821 features a custom funnel design for quick and easy priming. Remove the prime cap located on top of the pump housing. Fill the pump housing with clean water until it overflows. Replace the prime cap securely. The pump must be primed before each use to ensure it can draw water effectively.

Imatge: Un primer pla view of the orange cap labeled 'Prime' on the top of the pump housing, indicating the fill point for priming the pump.
Instruccions de funcionament
1. Arrencada del motor
- Ensure the pump is properly primed and all hoses are connected.
- Place the suction hose with the strainer into the water source.
- Gireu la vàlvula de combustible a la posició 'ON'.
- Moveu la palanca de l'estrangulador a la posició «CHOKE» (si el motor està fred).
- Gireu l'interruptor del motor a la posició 'ON'.
- Estireu la maneta de l'arrencador de retrocés amb fermesa i suavitat fins que el motor arrenqui.
- Un cop el motor s'hagi engegat, moveu gradualment la palanca de l'estrangulador a la posició "RUN".
2. During Operation
Monitor the pump for consistent water flow and listen for any unusual noises. Ensure the suction hose remains submerged in water to prevent the pump from running dry, which can cause damage.
3. Aturar el motor
- Gireu l'interruptor del motor a la posició 'OFF'.
- Gireu la vàlvula de combustible a la posició 'OFF'.
- Allow the engine to cool before handling or storing.
Manteniment
Un manteniment regular garanteix un rendiment òptim i allarga la vida útil de la bomba.
Oli de motor
Check the engine oil level before each use. Change the oil after the first 5 hours of operation, and then every 50 hours or annually, whichever comes first.
Filtre d'aire
Inspect the air filter regularly and clean or replace it as needed, especially when operating in dusty conditions.
Bujía
Inspect the spark plug annually or every 100 hours. Clean or replace if necessary, ensuring the correct gap.
Pump Housing and Impeller
Periodically inspect the pump housing and impeller for debris or wear. Clean out any blockages to maintain efficient flow.
Emmagatzematge
For long-term storage, drain the fuel tank and carburetor. Remove the spark plug and pour a small amount of engine oil into the cylinder, then pull the recoil starter a few times to distribute the oil. Clean the exterior of the pump and store it in a dry, protected area.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El motor no arrencarà | No fuel, old fuel, low oil, choke position incorrect, engine switch off, fouled spark plug | Add fresh fuel, check oil level, adjust choke, turn engine switch ON, clean/replace spark plug |
| Pump not moving water | Not primed, air leak in suction hose, clogged strainer, suction hose not submerged | Prime pump, check hose connections, clean strainer, ensure suction hose is fully submerged |
| Reducció del cabal d'aigua | Partial blockage in hoses or impeller, air leak, worn impeller | Inspect and clear blockages, check hose connections, contact service for impeller inspection |
| El motor funciona malament | Combustible ranci, filtre d'aire brut, separació incorrecta de les bugies | Drain and replace fuel, clean/replace air filter, adjust/replace spark plug |
Especificacions
- Marca: Generac
- Número de model: 6821
- Font d'alimentació: Funciona amb gas
- Motor: Generac 79cc
- Dimensions del producte (L x A x A): 17.2" x 12.1" x 16.5"
- Pes de l'article: 44 lliures
- Cabal màxim: 80 galons per minut
- Alçada màxima d'elevació: 26 peus
- Material: Stainless Steel (pump components)
- UPC: 696471068214

Image: The Generac 6821 Clean Water Pump with its key dimensions (length, width, height) clearly indicated in inches.
Garantia
This Generac 6821 Clean Water Pump is covered by a Garantia del fabricant de 1 anys from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use. It does not cover damage due to misuse, neglect, unauthorized modifications, or normal wear and tear.
Suport
For technical assistance, parts, or warranty inquiries, please contact Generac customer support. Refer to the official Generac weblloc web o la documentació de compra per obtenir la informació de contacte més actualitzada.
Recursos en línia: www.generac.com